The photosynthetic performance of sea ice microalgae, benthic microalgae, coralline red algae (Phymatolithon foecundum) and brown macroalgae (Laminaria saccharina, Fucus evanescens and Desmarestia aculeata) in an ice-covered high-Arctic fjord (Young Sound, NE Greenland) was studied with in situ instruments for oxygen microprofiling and active chlorophyll fluorescence measurements. In situ measu...

We hypothesized that myocardial contractile function and coronary arterial function are greater after ischemia and reperfusion in high-intensity treadmill-trained vs. sedentary rats. Rats performed 10 x 4-min bouts of treadmill running consisting of 2 min at 13 m/min + 2 min at 45-60 m/min (Etr) or were sedentary (Sed) for 12 wk. Animals then were instrumented to measure left ventricular (LV) c...

Sod culture (SC) and no tillage (NT) are modern orchard management systems, two different bases for the sustainable development production of citrus orchards in Taiwan. However, there is information about efficiency either NT or SC on photosynthetic physiology farmed under seasons varying light intensities. The objective this study was to clarify impacts eco-friendly farming apparatus an import...

Future climate will alter the soil cover of mosses and snow depths in the boreal forests of eastern Canada. In field manipulation experiments, we assessed the effects of varying moss and snow depths on the physiology of black spruce (Picea -mariana (Mill.) B.S.P.) and trembling aspen (Populus tremuloides Michx.) in the boreal black spruce forest of western Québec. For 1 year, naturally regenera...

This paper analyses firm-specific and country-specific factors that have an impact on the effective corporate income tax rates (ETR) for CEE listed companies based data obtained from BvD Amadeus database. Business analysed in this research are company size, leverage, capital inventory intensity, return assets. Concerning factors, chosen were statutory rate cultural represented by personal econo...

BACKGROUND AND AIMS Anthropogenic depletion of stratospheric ozone in Arctic latitudes has resulted in an increase of ultraviolet-B radiation (UV-B) reaching the biosphere. UV-B exposure is known to reduce above-ground biomass and plant height, to increase DNA damage and cause accumulation of UV-absorbing compounds in polar plants. However, many studies on Arctic mosses tended to be inconclusiv...

We report a detailed dynamics and kinetics study of the title reaction over the range of translational energies 0.418 e Etr/kJ mol-1 e 62.760 by employing the quasiclassical trajectory method and a recently reported double many-body expansion potential energy surface for ground-state HO3. A comparison of the calculated thermal rate constants with the available experimental results is also prese...

Electron transport and the electrochemical proton gradient across the thylakoid membrane are two fundamental parameters of photosynthesis. A combination of the electron acceptor, ferricyanide and the DpH indicator, 9-aminoacridine, was used to measure simultaneously electron transport rates and DpH solely by changes in the fluorescence of 9-aminoacridine. This method yields values for the rate ...